Rigorous analysis of the coupling between two nonparallel optical fibers

被引:4
作者
Chremmos, Ioannis D.
Uzunoglu, Nikolaos K.
Kakarantzas, George [1 ]
机构
[1] Natl Tech Univ Athens, Dept Elect & Comp Engn, Microwave & Fiber Opt Lab, Athens 15780, Greece
[2] Natl Tech Univ Athens, Dept Elect & Comp Engn, Photon Commun Res Lab, Athens 15780, Greece
关键词
electromagnetic coupling; electromagnetic scattering; Fourier transforms; Green's function; integral equations; optical-fiber couplers; optical-fiber coupling;
D O I
10.1109/JLT.2006.881852
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The rigorous electromagnetic analysis of the coupling between two nonparallel optical-fiber waveguides is developed for the first time. Green's theorem, involving the dyadic Green's function of the fiber guiding the incident mode, is used to formulate the electric-field integral equation inside the second fiber. By applying the entire-domain Galerkin technique and by utilizing the generalized addition theorem for cylindrical waves for nonparallel axis translation, which is derived by the authors, this equation is analyticatly transformed into a system of coupled integral equations for the spectral weights of the field on the basis of TE and TM cylindrical vector wave functions. The Neumann-series iterative procedure is adopted to solve this system and obtain analytical expressions for the field scattering coefficients, which are sufficiently accurate for weakly coupled fibers.
引用
收藏
页码:3779 / 3788
页数:10
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